Q. Photorespiration reaction catalyzed by RuBisCo is shown below: RuBP + O₂ → 3-Phosphoglycerate + X. Identify "X" from the given options:
A) Malate
B) Phosphoenolpyruvate
C) 2-Phosphoglycolate
D) Oxaloacetate
Explanation
[Solution from source] When RuBisCo acts as an oxygenase, RuBP combines with O₂ to give one 3-phosphoglycerate and one 2-phosphoglycolate. PEP, oxaloacetate and malate belong to the C₄ pathway. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.